The per-domain pointer to this is stored in ->arch.hvm_domain.irq.dpci,
hence suggesting that this is a HVM only field.
do_domctl(XEN_DOMCTL_bind_pt_irq) and domain_get_irq_dpci()
access it however without considering HVM-ness. In the course of
splitting/shrinking struct domain, I'd therefore need to know whether
this field ought to become common, or whether all accessors of the
field need to get protected by is_hvm_domain().

Thanks, Jan


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